Still worse, many news websites (e.g. a famous right-leaning British daily) plaster their articles with sponsored content, which sends you to dubious, low-quality external websites in turn plastered with low-quality banners, e.g. regarding weight loss solutions, foreign exchange trading, etc.

In these websites, the real content is so watered down and concealed that you are easily tricked into clicking on one of the many ads around and in the middle of it. So, sloppy content leads to more sloppy content that, in turn, leads to potentially harmful, surely useless, misleading and carelessly crafted advertising.